Your Cummins's exhaust manifold plays a significant role in ensuring your vehicle is running at its best. Here's what will happen if you drive without one.

A Cummins exhaust manifold isn't exactly a lightweight component to maneuver, so don't be afraid to climb aboard in an install like this. With the turbo out of the way, ...

As much as we like the 5.9L Cummins powerplant, the stock exhaust manifold is constrictive and contorted, interfering with the flow of gases to the turbo and downpipe. That, in turn, can produce ...

Cummins power plants that feature grid heaters include its 5.9-liter models dating back to 1989 and the larger 6.7-liter engines that power heavy-duty Ram trucks from 2007 up to the 2024 model years.

Affected engines include Cummins Westport ISL G engines manufactured between Jan. 3, 2013, and Feb. 2, 2014, Cummins Westport ISX12 G engines built between Feb. 19, 2013, and Feb. 2, 2014.

When I first throttled up the new Cummins Westport ISX12 G, I wanted to make a comparison between this natural-gas-fueled engine and its diesel-fired counterpart. But they are different engines ...

Your Cummins's exhaust manifold plays a significant role in ensuring your vehicle is running at its best. Here's what will happen if you drive without one.